FAQ:
Fedora:
Why can't I playing some YouTube videos (HTML5 error) and where can I get the codecs to run H.264 videos?
Solution
How to configure a fresher look for your GRUB2 at Fedora instead of the black white one:
Click here
General (CentOS, Fedora, Ubuntu, Debian, Manjaro, ...):
Kernel panic error (sync fail) at various distributions when starting the installation.
Solution